You will need a membership card in order to request graphics, buy graphics, take part in contest, etc, so you can see why they are so important!
Keep in mind you can only have one and pictures must be 100x100 icons.

Here is an example of one:

Spoiler Alert! Click to show or hide

FORM:
username:
nickname:
birthday:
position:
picture:
have you invited all your buddies[proof]:
have you uploaded 5 Bleach pictures in the payments album[proof]:
have you read the rules page?: